:root {
  --brand: #0146e2;
  --brand-dark: #0135b0;
  --brand-light: #3d6ef0;
  --brand-muted: rgba(1, 70, 226, 0.08);
  --text: #0f172a;
  --text-muted: #64748b;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e2e8f0;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(1, 70, 226, 0.08);
  --shadow-lg: 0 20px 60px rgba(15, 23, 42, 0.12);
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Playfair Display", Georgia, serif;
  --header-h: 72px;
  --transition: 0.25s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

html.no-smooth-scroll {
  scroll-behavior: auto;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-anchor: none;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

.container {
  width: min(1140px, 92vw);
  margin-inline: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 100px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-dark);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

.btn-full {
  width: 100%;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  border-color: var(--border);
  box-shadow: var(--shadow);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo img {
  display: block;
  height: 40px;
  width: auto;
  max-width: 168px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a:not(.btn) {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}

.nav-links a:not(.btn):hover {
  color: var(--brand);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Hero scene */
.scene-hero.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
}

.hero-content {
  padding: 3rem 0 5rem;
  color: #fff;
  max-width: 720px;
}

.hero .layer-brand-gradient {
  background: linear-gradient(
    135deg,
    rgba(1, 70, 226, 0.9) 0%,
    rgba(1, 53, 176, 0.78) 48%,
    rgba(15, 23, 42, 0.65) 100%
  );
}

.hero .layer-mist {
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(1, 70, 226, 0.25) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
}

.hero-banner-img {
  opacity: 0.55;
}

.hero-eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0.9;
  margin-bottom: 1rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.hero-lead {
  font-size: 1.125rem;
  opacity: 0.92;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
}

.stat-label {
  font-size: 0.875rem;
  opacity: 0.8;
}

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 0.75rem;
}

.section-header {
  margin-bottom: 2.25rem;
  max-width: 560px;
}

.section-header--center {
  text-align: center;
  margin-inline: auto;
}

.section-header h2,
.contact-info h2,
.instagram-text h2,
.checklist-intro h2,
.stories .section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.0625rem;
}

/* Destinations */
.destinations {
  background: var(--bg);
  padding-top: 3.5rem;
  padding-bottom: 4rem;
}

.destinations-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 260px);
  gap: 1.25rem;
}

.destination-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transform-style: preserve-3d;
}

.destination-card--large {
  grid-row: span 2;
}

.destinations-grid--single {
  grid-template-columns: 1fr;
  max-width: 720px;
  margin: 0 auto;
  grid-template-rows: minmax(300px, 360px);
}

.destinations-grid--single .destination-card--large {
  grid-row: auto;
}

.destination-img--serbia,
.card-depth__bg.destination-img--serbia,
.card-depth__fg.destination-img--serbia {
  background-image: url("https://images.unsplash.com/photo-1599946348170-91dcca99a2bf?w=600&q=80");
}

.destination-overlay {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.88) 0%, transparent 55%);
  color: #fff;
  -webkit-mask-image: linear-gradient(to top, #000 35%, transparent 100%);
  mask-image: linear-gradient(to top, #000 35%, transparent 100%);
}

.destination-region {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.85;
  margin-bottom: 0.25rem;
}

.destination-overlay h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.destination-overlay p {
  font-size: 0.875rem;
  opacity: 0.9;
}

/* Admission checklist */
.checklist {
  background: var(--bg);
  padding-top: 3.5rem;
  padding-bottom: 4rem;
}

.checklist-wrap {
  max-width: 960px;
  margin-inline: auto;
}

.checklist-intro--center {
  text-align: center;
  margin-bottom: 2rem;
}

.checklist-intro p {
  color: var(--text-muted);
  font-size: 1.0625rem;
  margin-bottom: 0;
}

.checklist-actions {
  display: flex;
  justify-content: center;
  margin-top: 2rem;
}

.checklist-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.875rem;
  list-style: none;
}

.checklist-item:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  max-width: calc(50% - 0.4375rem);
  justify-self: center;
  width: 100%;
}

.checklist-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.125rem 1.25rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.checklist-item:hover {
  border-color: var(--brand-light);
  box-shadow: 0 8px 32px rgba(1, 70, 226, 0.1);
}

.checklist-item__body {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  min-width: 0;
}

.checklist-item__step {
  font-weight: 700;
  color: var(--text);
  flex-shrink: 0;
  line-height: 1.4;
}

.checklist-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
  line-height: 1.35;
}

.checklist-item p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.checklist-item__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--brand-muted);
  color: var(--brand);
}

/* Experiences / Services */
.experiences {
  background: var(--brand-muted);
  position: relative;
  padding-top: 3.5rem;
  padding-bottom: 4rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  max-width: 960px;
  margin-inline: auto;
}

.service-card {
  background: var(--bg);
  padding: 1.5rem 1.625rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  border-color: var(--brand-light);
  box-shadow: var(--shadow);
}

.service-card__num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--brand);
  opacity: 0.4;
  margin-bottom: 0.5rem;
  line-height: 1;
}

.service-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.625rem;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 0.625rem;
}

.service-card p:last-child {
  margin-bottom: 0;
}

.experiences-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.experiences-grid--two {
  grid-template-columns: repeat(2, 1fr);
  max-width: 880px;
  margin-inline: auto;
}

.experiences-grid--four {
  grid-template-columns: repeat(2, 1fr);
}

.experience-card {
  background: var(--bg);
  padding: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.experience-card__img {
  height: 160px;
  background-size: cover;
  background-position: center;
}

.experience-card__body {
  padding: 1.75rem 2rem 2rem;
}

.experience-card:hover {
  border-color: var(--brand-light);
  box-shadow: var(--shadow);
}

.experience-icon {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--brand);
  opacity: 0.35;
  margin-bottom: 1rem;
}

.experience-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.experience-card p {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* Success stories */
.stories {
  background: var(--bg-alt);
  padding-top: 3.5rem;
  padding-bottom: 4rem;
}

.stories-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.story-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.story-card:hover {
  border-color: var(--brand-light);
  box-shadow: 0 8px 32px rgba(1, 70, 226, 0.1);
}

.story-video {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(145deg, var(--brand-muted) 0%, #e8eef9 100%);
}

.story-video__player {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: #0f172a;
}

.story-card__meta {
  padding: 1rem 1.25rem 1.25rem;
}

.story-stars {
  display: flex;
  gap: 0.125rem;
  color: #f59e0b;
  margin-bottom: 0.5rem;
}

.story-quote {
  font-size: 0.9375rem;
  line-height: 1.55;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.story-name {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

.stories-actions {
  display: flex;
  justify-content: center;
}

/* Instagram */
.instagram-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: center;
}

.instagram-text p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.instagram-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.ig-tile {
  aspect-ratio: 1;
}

.ig-tile-1 { background-image: url("https://images.unsplash.com/photo-1599946348170-91dcca99a2bf?w=500&q=80"); }
.ig-tile-2 { background-image: url("https://images.unsplash.com/photo-1605649487212-47d63b6902c0?w=500&q=80"); }
.ig-tile-3 { background-image: url("https://images.unsplash.com/photo-1456513080510-7bf3a84b82f8?w=500&q=80"); }
.ig-tile-4 { background-image: url("https://images.unsplash.com/photo-1434626881859-194d67b2b86f?w=500&q=80"); }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-links a {
  color: var(--brand);
  font-weight: 600;
  transition: color var(--transition);
}

.contact-links a:hover {
  color: var(--brand-dark);
}

.contact-form {
  background: var(--bg-alt);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.form-row {
  margin-bottom: 1.25rem;
}

.form-row label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-muted);
}

.form-row textarea {
  resize: vertical;
  min-height: 100px;
}

/* Footer */
.footer {
  background: var(--text);
  color: rgba(255, 255, 255, 0.7);
  padding: 2.5rem 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer .logo img {
  height: 36px;
}

.footer-copy {
  font-size: 0.875rem;
}

.footer-social a {
  color: #fff;
  font-weight: 600;
  font-size: 0.875rem;
}

.footer-social a:hover {
  color: var(--brand-light);
}

/* Mobile */
@media (max-width: 900px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links li {
    border-bottom: 1px solid var(--border);
  }

  .nav-links a {
    display: block;
    padding: 1rem;
  }

  .nav-links .btn {
    margin: 0.5rem 0;
    text-align: center;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .contact-grid,
  .instagram-inner {
    grid-template-columns: 1fr;
  }

  .experiences-grid--two,
  .experiences-grid--four,
  .services-grid,
  .stories-grid {
    grid-template-columns: 1fr;
  }

  .checklist-items {
    grid-template-columns: 1fr;
  }

  .checklist-item:nth-child(n),
  .checklist-item:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    max-width: none;
  }

  .destinations-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .destination-card,
  .destination-card--large {
    grid-row: auto;
    min-height: 240px;
  }

  .experiences-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: 2rem;
  }
}

@media (max-width: 900px) {
  .hero-content {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1.5rem;
  }
}